Advertisements
Advertisements
प्रश्न
Predict the genotype and phenotype of the following cross in pea.
TtRr x TtRr
(Capital letters show dominance)
उत्तर
Genotype - 1TTRR : 2TTRr : 2TtRR : 1ttRR : 4TtRr : 1TTrr : 2Ttrr : 2ttRR : ttrr
Phenotype - 9 - Tall and Round seeds ; 3 - Tall and wrinkled seeds; 3 - Dwarf and round seeds; 1 - Dwarf and wrinkled seeds.
APPEARS IN
संबंधित प्रश्न
The F2 progeny of a monohybrid cross showed phenotypic and genotypic ratio as 1:2:1 unlike that the Mendel’s monohybrid F2 ratio. With the help of a suitable example, work out a cross and explain how it is possible.
Define the following:
Heterozygous
Choose the correct answer:
A cross where two pairs of alleles are considered is a ____________
Explain the following term : Pedigree chart
The colour based contrasting traits in seven contrasting pairs, studied by Mendel in pea plant were ______.
Select the group which shares maximum number of common characters
Enlist the steps of controlled cross pollination. Would emasculation be needed in a cucurbit plant? Give reasons for your answer.
In peas, tallness is dominant over dwarfness, and red colour of flowers is dominant over the white colour. When a tall plant bearing red flowers was pollinated with a dwarf plant bearing white flowers, the different phenotypic groups were obtained in the progeny in numbers mentioned against them:
Tall, Red = 138
Tall, White = 132
Dwarf, Red = 136
Dwarf, White = 128
Mention the genotypes of the two parents and of the four offspring types.
Enumerate the cause and the characteristic symptom of PKU.
